Virulence profile of tigecycline-resistant Gram-negative bacilli isolated from river waters using the Caenorhabditis elegans infection model / Perfil de virulência de bacilos Gram-negativos resistentes à tigeciclina isolados das águas dos rios usando o modelo de infecção por Caenorhabditis elegans

Last-resort antibiotics act as ultimate force to overcome multidrug-resistant strains infections. Cases of tigecycline resistance in gram-negative bacilli in clinical settings are reported worldwide, however, there is no data related to tigecycline resistant strains in river water. This study demons...

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Veröffentlicht in:Brazilian Journal of Development 2021-11, Vol.7 (11), p.106714-106732
Hauptverfasser: Nogueira, Barbara Araújo, Olivella, Julianna Giordano Botelho, Vasconcelos, Renata da Silva, Sued-Karam, Bruna Ribeiro, Ribeiro, Paula Marcele Afonso Pereira, Fracalanzza, Sérgio Eduardo Longo, Ignácio, Ana Claudia de Paula Rosa, Mattos-Guaraldi, Ana Luíza
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Sprache:eng
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Zusammenfassung:Last-resort antibiotics act as ultimate force to overcome multidrug-resistant strains infections. Cases of tigecycline resistance in gram-negative bacilli in clinical settings are reported worldwide, however, there is no data related to tigecycline resistant strains in river water. This study demonstrates seven tigecycline gram-negative bacilli isolated from river water in Rio de Janeiro metropolitan area, their resistance genes, ability of biofilm formation with/without antibiotics and behavior using the nematode Caenohabidits elegans as infection in vivo model. From 24 gram-negative isolated strains, 16 (66.6%) were classified as multidrug-resistant, however, seven (29.1%) presented resistant to all antimicrobial agents tested, including tigecycline and have been identified by MALDI-TOF as A. baumannii, E. aerogenes and P. agglomerans. All tigecycline-resistant strains presented amplification products for ESBL, AME and PMQR and ability of biofilm formation on hydrophilic and hydro­phobic abiotic surfaces with and without antimicrobial agents. The presence of antimicrobials did not inhibit biofilm formation. Tigecycline-resistant strains differed of OP50 control with P
ISSN:2525-8761
2525-8761
DOI:10.34117/bjdv7n11-351